alpha-Carotene

α-Carotene

Space-filling model
Identifiers
CAS Number	7488-99-5 N
ChEBI	CHEBI:28425 Y
ChemSpider	3571861 Y
Jmol 3D model	Interactive image
PubChem	6419725
UNII	45XWE1Z69V Y
InChI InChI=1S/C40H56/c1-31(19-13-21-33(3)25-27-37-35(5)23-15-29-39(37,7)8)17-11-12-18-32(2)20-14-22-34(4)26-28-38-36(6)24-16-30-40(38,9)10/h11-14,17-23,25-28,37H,15-16,24,29-30H2,1-10H3/b12-11+,19-13+,20-14+,27-25+,28-26+,31-17+,32-18+,33-21+,34-22+ Y Key: ANVAOWXLWRTKGA-JLTXGRSLSA-N Y InChI=1/C40H56/c1-31(19-13-21-33(3)25-27-37-35(5)23-15-29-39(37,7)8)17-11-12-18-32(2)20-14-22-34(4)26-28-38-36(6)24-16-30-40(38,9)10/h11-14,17-23,25-28,37H,15-16,24,29-30H2,1-10H3/b12-11+,19-13+,20-14+,27-25+,28-26+,31-17+,32-18+,33-21+,34-22+ Key: ANVAOWXLWRTKGA-JLTXGRSLBQ
SMILES C\C2=C\CCC(C)(C)C2/C=CC(\C)=C\C=C\C(\C)=C\C=C\C=C(/C)\C=C\C=C(/C)\C=C\C1=C(/C)CCCC1(C)C
Properties
Chemical formula	C40H56
Molar mass	536.873
Vapor pressure	{{{value}}}
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)
Infobox references

α-Carotene is a form of carotene with a β-ionone ring at one end and an α-ionone ring at the opposite end. It is the second most common form of carotene.

Human physiology

In United States adults and Chinese adults the mean concentration of serum α-carotene was 4.71 µg/dL, including 4.22 µg/dL among men and 5.31 µg/dL among women (to convert to micromoles per liter, multiply by 0.01863).

Health effects

Dietary intake affects blood levels of α-carotene, which in one study was associated with significantly lower risk of premature death.

Dietary sources

The following vegetables are rich in alpha-carotene:

• Yellow-orange vegetables : Carrots (the main source for U.S. adults), Sweet potatoes, Pumpkin, Winter squash
• Dark-green vegetables : Broccoli, Green beans, Green peas, Spinach, Turnip greens, Collards, Leaf lettuce, Avocado